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Wispr Flow vs Rambleproof
Flow is cloud dictation across Mac, Windows, iOS, and Android. Rambleproof is local-first push-to-talk dictation built only for Apple Silicon Macs. Here is the practical difference.
By Moe Lueker, founder of Rambleproof. Facts checked . We make Rambleproof, so read this as an editorial comparison with a stake in the outcome, not a neutral review.
The short version
Consider Wispr Flow if you need one dictation product across desktop and mobile, more than 100 languages, or team administration. Consider Rambleproof if your priority is a Mac app you activate once, whose Free tier keeps raw dictation and cleanup on the machine. Flow offers a broader platform surface. Rambleproof draws a narrower processing boundary and publishes subscription and lifetime choices.
What Wispr Flow publishes
Wispr Flow offers dictation on Mac, Windows, iOS, and Android. Its official plan documentation lists more than 100 languages, a personal Free plan, Pro, and higher team tiers. Flow also offers Command Mode, shared team features, and a Mac meeting notetaker.
Wispr's privacy page says transcription always happens in the cloud. Its setup documentation requires an internet connection and an account, with Google, Apple, Microsoft, SSO, or email sign-in. That is a different architecture from an offline local pipeline, not a verdict on the quality of either product.
At current US list prices, Flow Pro is $15 per user each month, or $12 per user each month when billed annually. Flow's official plan documentation describes a 2,000-word soft cap and a 5,000-word hard cap each week for Free desktop dictation. Regional checkout prices, discounts, and limits on other platforms can differ.
What Rambleproof publishes
Rambleproof is push-to-talk dictation for Apple Silicon Macs running macOS 15 or later, including macOS 27 (macOS 26 or later recommended). Hold the configured shortcut, speak, and release. Local transcription and cleanup run on the Mac by default after one-time account or license activation. A safe clipboard fallback preserves the result when the app or window clearly changed, a field is secure, or the current control cannot accept text.
Free includes unlimited raw local dictation forever, 15,000 AI-cleaned words each week, and basic cleanup after that weekly allowance is used. It also keeps complete local history, two custom modes, and every safety feature. Free dictation works offline after activation.
Pro is $12 a month or $96 a year. Its 14-day preview starts with the first successful dictation. Managed cloud is planned for a future release. Its pricing and availability will be announced separately. Lifetime is $200, with a $150 founding price for the first 60 days from the new pricing launch. Lifetime includes everything local and your own API keys. Managed cloud and cloud sync are not included and are not available yet.
The product-model difference
Flow uses cloud processing to deliver a broad, cross-platform product that can polish text for different contexts. Rambleproof's default path keeps transcription and cleanup local, applies fidelity checks, and falls back to transcript-level or deterministic output when a cleanup is rejected or the weekly Free allowance is spent. Neither design removes every possible transcription or cleanup error.
Side by side
| Question | Wispr Flow | Rambleproof |
|---|---|---|
| Default processing boundary | Cloud transcription | Local transcription and cleanup on the Mac |
| Account required? | Yes | One-time account or license activation |
| Offline dictation? | No | Yes, with local engines |
| Platforms | Mac, Windows, iOS, Android | Apple Silicon Mac, macOS 15+, including 27 (26+ recommended) |
| Published language scope | 100+ languages | English benchmarked; support varies by selected engine |
| Free tier | Weekly desktop soft and hard word caps | Unlimited raw dictation; 15,000 AI-cleaned words a week |
| Paid individual options | $15 monthly or $12 monthly billed annually | Pro $12 monthly or $96 annually; Lifetime $200 |
Accuracy and speed
Flow does not publish its engine, so no independent benchmark covers it. The chart below has two groups for that reason: the engines that sit on a leaderboard anyone can rerun, and then Flow and Apple against whatever was actually measured on them, on their own axis with the publisher named on each bar. Mixing the two would invent a comparison nobody ran.
Accuracy and speed
- Rambleproof, or the engine family it runs
- Other tools and engines
19% fewer words wrongwith Parakeet v2 than with Whisper large-v3, on the same audio. These are speech engines, not apps.
Same audio, independent leaderboard
* Measured elsewhere, on different audio
Lower is better. Rows marked * or † were measured elsewhere. Parakeet v2 makes about 14 fewer word errors per thousand than Whisper large-v3 on an independent leaderboard. It compares two engines, not two apps. Superwhisper can run Parakeet too, and Rambleproof's default English model is Parakeet Unified, a different configuration. Wispr Flow and Apple come from other sources.
Sources and the numbers as a table
- *Not the same test as the unmarked bars: different audio, in a different year. Wispr Flow 8.7% is published by Superwhisper, a direct competitor, and another rival puts it at 6.2%. Apple is the University of Washington's figure for single words read aloud, measured in 2022: 14% for the best-served speaker group, 24% for the other three.
Sources: Open ASR Leaderboard, English short-form. * Scott, Liang, Wassink and Levow, University of Washington (arXiv:2510.22495).
The leaderboard measures speech engines, not whole apps, averaged over 8 datasets: AMI, Earnings22, GigaSpeech, LibriSpeech clean, LibriSpeech other, SPGISpeech, TED-LIUM v3, VoxPopuli. Before 1.0.9, Rambleproof's own end-to-end time was 1.32s median over 37 dictations (key release to cleaned text at the cursor, MacBook Air M4, macOS 26.5.1); 1.0.9 streams transcription while you talk and brings that to about 1 second.
| Tool | What was measured | Accuracy | Measured by |
|---|---|---|---|
| Parakeet v2 | Parakeet TDT 0.6B v2 | 6.05% | Open ASR Leaderboard, English short-form |
| Whisper large-v3 | Whisper large-v3 | 7.44% | Open ASR Leaderboard, English short-form |
| Wispr Flow | engine not disclosed | 8.7% | Superwhisper, a direct competitor |
| macOS Dictation | Apple Speech API, single words, 2022 | 14.0% | University of Washington |
What everyone else publishes, and who published it
The full set of figures the dictation industry publishes about itself, including the ones the chart above draws. Every one was produced by a company selling one of the products being scored, and none publishes a corpus you could use to check the result, which is why they are charted apart from the independent benchmark rather than beside it. Where two of them measure the same product, both are listed, disagreement included.
| Tool | Figure | Value | Published by |
|---|---|---|---|
| Wispr Flow | Word-error rate | 6.2% | LumeVoice A competing dictation app, ranking itself first in the same table. No corpus or method published. |
| Superwhisper | Word-error rate | 3.6% | LumeVoice Same table, same publisher. Disagrees with the independent leaderboard figures for the Whisper and Parakeet engines charted above, both engine families Superwhisper offers. |
| macOS Dictation | Word-error rate | 20.9% | LumeVoice Same table. Other dictation blogs put the same product between 7.8% and 18%, which is the spread you get when nobody shares a corpus. |
| Wispr Flow | Word-error rate | 8.7% | Superwhisper A direct competitor measuring Wispr Flow. Publishes more of its method than most, but is still a contestant scoring a rival. |
| Wispr Flow | Time to final text | 0.80 s | Embertype A competing dictation app. No trial count and no method stated. |
| Superwhisper | Time to final text | 1.40 s | Embertype Same post, same absence of method. |
| macOS Dictation | Time to final text | 0.30 s | Embertype Same post. Yapper measures the same product at 760 ms, which is 2.5 times slower. |
| macOS Dictation | Time to first character | 760 ms | Yapper A competing dictation app, but the best method of the set: 100 trials per app on an M3 Pro, timed off 120 fps screen capture. It measures the first character, not the finished text. |
The only numbers on this page we measured ourselves are Rambleproof's, and we say exactly how: in 1.0.9, about 0.3 seconds from letting go to raw text and about 1 second to cleaned text at the cursor, on a MacBook Air M4 (1.32 seconds median across 37 dictations before 1.0.9). The one competitor timed the same way is Wispr Flow, from its own logs on the same Mac, shown in the chart's speed tab.
Where Flow covers more ground
Rambleproof does not have Windows, iPhone, or Android apps. It also does not match Flow's published language breadth, team billing, administrative controls, or meeting product. Those are concrete reasons to choose Flow when they are part of the job.
Where Rambleproof draws a different boundary
Rambleproof fits a more specific case: Mac users who want local push-to-talk dictation, cleanup that checks your numbers and negations, a one-time activation instead of an always-online account, and a Free tier that never locks raw dictation. Its lifetime option also separates local and bring-your-own-key features from the managed cloud service planned for Pro.
Download Rambleproof free or review every Rambleproof plan.
Official sources
- Wispr Flow plans, prices, limits, and platforms
- Wispr Flow public pricing table
- Wispr Flow privacy and cloud-processing disclosure
- Wispr Flow setup, account, and connection requirements
Related reading
Where Rambleproof fits
Unlimited raw local dictation forever, with 15,000 AI-cleaned words each week at Light or Medium, then basic cleanup (fillers and punctuation, no AI rewrite) until Monday. Activate once with an account or license. Every safety feature stays available on Free.