Shift Unit vs SpeechFlow
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Shift Unit
This utility app offers precise unit and currency conversions with over 1400 units across 34 categories. It supports light/dark modes, home widgets, and an independent Apple Watch app. Features include a custom keypad with calculator mode and educational Wikipedia integration.
- 1400+ conversion units
- 34 categories
- Light/dark mode support
- Home widget
- Apple Watch app
- Custom keypad with calculator
- Wikipedia integration
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Shift Unit is a unit converter designed with usability and numerical precision in mind. It features 1400+ conversion units across 34 categories. It works great in light or dark mode, and as a Home Widget w/ localized number displays. Independent WatchOS app and complications. Operations can be carried out in portrait mode in simple precision (7 significant digits,) or in landscape mode in double precision (14 significant digits.) Conversion formulae use exact definitions of related entities--not approximations. Wikipedia page information can be pulled for categories and conversion units. (Look for info circle.) The custom keypad has a calculator mode, and allows to enter/edit numbers on either side of the conversion. Unit categories include Acceleration, Angle, Area, Bit Rate, Clock, Online Currencies, Data Storage, Area Density, Volumetric Density, Electric Charge, Electric Current, Energy, Volumetric Flow Rate, Force, Frequency, Fuel, Length, Luminance, Lux, Mass Flow Rate, Momentum, Power, Pressure, Radiation Dose, Radioactivity, Radiation Exposure, Speed, Temperature, Temperature Delta, Time, Torque, Typography, Volume, and Weight. Features: - One screen operation minimizing number of gestures - Numbers (digits, decimal/grouping separators, exponent)/time/country names localized to your (or any) region - Current time in 2 out of 439 world cities and see your cities pinned on a flyover map, an educational way of discovering the world through time zones - Weather conditions and forecast for time zone cities - Dedicated accessibility labels and hints for VoiceOver operations - Customizable number entry timeout allowing to enter a new number without having to clear the field. (Turned off when an accessibility feature, e.g. VoiceOver, is on) - Customizable user interface (preferred categories; user interface alignment for left/right-handed entry or 2-thumb operations) - Ability to swap units while keeping initial numerical entry - Category presets for quick change of context, including user preset - Long-press category button to remove, or add a category on the fly - Long-press number field for copy/paste - Paste Mathematical constants (Pi, e, etc.) - Education via Wikipedia pages for categories and conversion units - Currency conversions using online rates - Searchable list of currency rates with possibility to change base rate - Set favorite currencies - Built-in numeric keypad (with calculator mode) to enter numbers on either side of the conversion - Long-press delete key to clear the field in focus - Engineering number format handling - Infinity and negative numbers handling - 7 or 14-digit precision displays (3-digit fractions for currencies) - Searchable list of 1400+ conversion units across 34 categories - On-boarding screens for general operations and for the Currency category (turned off when VoiceOver is on) - Home widget for quick conversions using units selected in the hosting app Happy Conversions!
SpeechFlow
This app converts audio and video files into accurate, offline text transcriptions. It uses on-device AI to summarize content, extract key points, and identify action items. Privacy is prioritized as all processing occurs locally on your device.
- Transcribe audio and video files
- Record voice notes to text
- Generate structured summaries
- Extract key points and action items
- Identify keywords
- Offline processing
- Privacy-focused
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SpeechFlow: Transcribe. Understand. Act. SpeechFlow turns spoken content into clear, structured text, then goes a step further by helping you understand and use it. Import audio or video files, or record directly in the app, and SpeechFlow will transcribe the speech accurately and completely offline. Once transcribed, SpeechFlow uses on-device AI to analyze the content and extract what matters most. What you can do with SpeechFlow: • Transcribe audio and video files • Record voice notes and convert them to text • Generate clear, well-structured summaries • Extract key points from long conversations or lectures • Identify action items and questions automatically • Highlight important keywords for quick reference • Copy or share results instantly Privacy first. Always offline. SpeechFlow runs entirely on your device. No data is collected, stored remotely, or shared. Your recordings and transcriptions never leave your phone. Important note Advanced AI analysis features require a device that supports Apple Intelligence. On unsupported devices, SpeechFlow will still transcribe audio, but AI summaries and insights will not be available. Perfect for students, professionals, meetings, lectures, voice notes, and everyday ideas. Download SpeechFlow and turn speech into clarity.
Screenshots
Verdict
The clearest difference is in-app purchases: Shift Unit at none against SpeechFlow's 1. Shift Unit also leads on update cadence (every 2 months vs every 5 months) and ratings volume (21 vs 3). On price, rating, ads and device support 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
Both are free to download. SpeechFlow sells 1 one-off in-app purchase. Shift Unit asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for Shift Unit against 5.0 for SpeechFlow. That said, the two scores are not equally well evidenced: Shift Unit has 21 ratings behind it against 3, so its average is the more settled of the two.
Shift Unit ships an update every 2 months, SpeechFlow every 5 months. The most recent releases landed on September 21, 2026 and October 1, 2026 respectively.
| Parameter | Shift Unit | SpeechFlow |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (21 ratings) | 5.0 (3 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 21 — better | 3 |
| Update frequency | Every 2 months — better | Every 5 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, Apple Watch — better | iPhone |
| Requires iOS | 16.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 20 MB | 150 MB |
| Age rating | 4+ | 4+ |
| Developer | Didier Burton | Basheer Abdelmalik |
Customer experience
Shift Unit
SpeechFlow
In-app purchases
Shift Unit
No in-app purchases
SpeechFlow
- Pro - Lifetime$9.99








