Comparison

Whisper Notes vs PHD Actuator Sizing

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Whisper Notes

This app provides accurate, on-device transcription of audio and video files in over 100 languages. It offers a secure, offline experience with no subscriptions or cloud uploads. Easily record or import files and export transcripts with timestamps.

Highlights
  • 100% offline transcription
  • Record voice or import audio/video
  • Supports 100+ languages
  • Export transcripts with timestamps
  • Lock screen widget for quick capture
  • Secure, on-device data storage
Features
Read full description

Maybe the best offline transcription app — 70,000+ journalists, researchers, and professionals seem to think so. Turn meetings, lectures, and voice memos into accurate text with speaker labels — fast, 100% offline, on your device. No subscription. One purchase, yours forever. ■ Core Features - Record voice memos and capture ideas instantly—from the Lock Screen, widgets, Action Button, or just say "Hey Siri" - Import audio and video from any app (WhatsApp, Photos, Voice Memos, etc.)—even extract subtitles - Turn meetings, lectures, and interviews into transcripts with speaker labels—see who said what, rename speakers, no length limits - 101 languages, auto-detected (optimized for English)—three models (Parakeet, Whisper, SenseVoice), switch freely - Export as SRT, VTT, or TXT—timestamps and speaker labels included ■ Privacy & Speed Because everything runs on your device, there is nothing to upload—and nothing to leak. Turn on airplane mode before you record and leave it on: Whisper Notes works exactly the same. That matters when the recording is an interview, a client meeting, or something you would never put on someone else's server. Transcribing 5 minutes of audio on iPhone 15: ~18 seconds with Parakeet, ~1 minute with Whisper. SenseVoice is much faster than Whisper and strongest for Chinese, Japanese, and Korean. Each model has its strengths—choose freely based on language and use case. Older devices are slower but work fine. ■ Honest Pricing Because transcription runs on your device, we have no server costs—so there is nothing to charge you monthly for. Most similar apps charge $100+/year; we charge once. No subscriptions, no in-app purchases, no ads. Not satisfied? Tap Settings → Request Refund. ■ Common Questions Does it work completely offline? Yes. Your audio never leaves your device. Works on flights, in remote areas, anywhere. Can I transcribe WhatsApp voice messages or videos? Yes. Share or save audio/video from WhatsApp to Whisper Notes and transcribe offline. Perfect for extracting subtitles without uploading to cloud services. Is there a recording time limit? No limit. Record for hours if you want. Longer recordings just take more time to transcribe on your device. Does it support real-time transcription while recording? Not during recording, but yes during transcription—after you finish recording, you'll see the transcript appear in real-time as it's being generated. Do you support speaker labels (diarization)? Yes—fully offline. Tap the speaker icon on any transcript to see who said what, right on your device. We keep improving accuracy and speed. Where is my data stored? Only on your device. We have zero access. Note: If you delete the app, your recordings are deleted too (because we don't keep secret backups). Please export important files regularly. Can I summarize a transcript? Yes — copy it into whichever AI tool you prefer. Whisper Notes itself never uploads anything; your audio and text stay on your device. Why does transcription stop when I switch apps? iOS limits background GPU usage for third-party apps. Just return to the app and tap "Re-transcribe"—it will restart. Which devices are recommended? iPhone 12 and newer. Older devices (iPhone 11, iPhone SE 2nd gen) are not recommended—the app will not function properly on these devices. What languages are supported? English, Español, Français, Deutsch, Português, Italiano, Nederlands, 简体中文, 繁體中文, 日本語, 한국어, Hindi, Arabic, Русский, Türkçe, Polski, Українська, Tiếng Việt, Thai, Tagalog, Bahasa Indonesia, Svenska, Norsk, Dansk, Suomi, Čeština, Greek, Hebrew, Română, Magyar, Persian, Urdu, and 65+ more languages. ■ Contact Questions? Email support@whispernotes.app Learn more: whispernotes.app

About

PHD Actuator Sizing

This engineering tool helps automation professionals quickly size servo motors for industrial applications. It allows users to input motion profiles and automatically calculates torque and inertia for accurate motor selection. Generate detailed reports and verify performance against motor specifications.

Highlights
  • Select from full actuator lineup
  • Input motion profiles
  • Automatic RMS torque calculations
  • Inertia ratio verification
  • Peak torque and speed checks
  • Exportable sizing reports
Features
Read full description

PHD Actuator Sizing Tool is a professional engineering application designed for automation engineers and system integrators. Quickly size Teknic ClearPath servo motors with PHD actuators for your industrial automation applications — right from your iPhone. Key Features: • Select from PHD's full actuator lineup — ECV ball screw cylinders, ESU/ESW ball screw and timing belt slides • Input motion profiles including velocity, acceleration, payload, and orientation • Automatic RMS torque calculations for accurate thermal motor sizing • Inertia ratio verification to ensure stable servo performance • Peak torque and speed checks against motor specifications • Detailed sizing reports with charts and exportable results • Comprehensive Teknic IPHP motor database built in • Clean, fast interface optimized for field and office use Contact info: Krishna Meruva, kmeruva@gmail.com

Screenshots

Whisper Notes4 screens
PHD Actuator Sizing4 screens

Verdict

The call

The clearest difference is price: PHD Actuator Sizing at Free against Whisper Notes's $7.99. PHD Actuator Sizing also leads on rating (5.0 vs 4.7). Whisper Notes's advantage is ratings volume (661 vs 2) and chart position (#17 vs unranked). On update cadence, ads, in-app purchases and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

PHD Actuator Sizing is free to download; Whisper Notes costs $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

PHD Actuator Sizing holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Whisper Notes has 661 ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

Whisper Notes ships an update every 2 weeks, PHD Actuator Sizing every 3 weeks. The most recent releases landed on October 21, 2026 and October 18, 2026 respectively.

Scorecard6 real differences · 5 level
Whisper Notes versus PHD Actuator Sizing: the parameters behind the verdict, then further details
ParameterWhisper NotesPHD Actuator Sizing
Price$7.99Free — better
Rating4.7 (661 ratings)5.0 (2 ratings) — better
Positive reviews66.3% of reviews—
Number of ratings661 — better2
Update frequencyEvery 2 weeks — betterEvery 3 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
Best chart rank#17 — better—
DevicesiPhone, iPad, Mac — betteriPhone
Requires iOS18.017.6 — better
Further details — not scored
Size508 MB1 MB
Age rating4+17+
DeveloperSmashMelon LLCKrishna Meruva

Customer experience

Whisper Notes

All ratings618 ratings
Positive91.1%
Neutral3.7%
Negative5.2%
Written reviews326 reviews
Positive66.3%
Neutral9.5%
Negative24.2%

PHD Actuator Sizing

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Whisper Notes

Reported bugs

4 issues
  • Recordings disappearing after transcription
  • Transcription process getting stuck at 1%
  • Crashes on certain iOS/iPadOS versions
  • Inability to import audio files consistently

Requested features

5 requests
  • Add support for speaker diarization
  • Implement real-time transcription mode
  • Allow customization of hotkey/shortcut
  • Improve integration with Apple Shortcuts
  • Provide option to choose transcription model size

PHD Actuator Sizing

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Whisper Notes

No in-app purchases

None

PHD Actuator Sizing

No in-app purchases

Questions

Is Whisper Notes free?
Whisper Notes costs $7.99, with no in-app purchases.
Is PHD Actuator Sizing free?
PHD Actuator Sizing is free to download, with no in-app purchases.
Which has better reviews, Whisper Notes or PHD Actuator Sizing?
PHD Actuator Sizing is rated higher. Whisper Notes averages 4.7 out of 5 from 661 ratings, while PHD Actuator Sizing averages 5.0 from 2 ratings.
Do Whisper Notes or PHD Actuator Sizing have ads?
Neither Whisper Notes nor PHD Actuator Sizing shows ads.
Which is updated more often, Whisper Notes or PHD Actuator Sizing?
Whisper Notes ships an update every 2 weeks, and PHD Actuator Sizing every 3 weeks. Most recently, Whisper Notes was updated on October 21, 2026 and PHD Actuator Sizing on October 18, 2026.

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