Comparison

Shift Unit vs SpeechFlow

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

Head to head
About

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.

Highlights
  • 1400+ conversion units
  • 34 categories
  • Light/dark mode support
  • Home widget
  • Apple Watch app
  • Custom keypad with calculator
  • Wikipedia integration
Features
Read full description

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!

About

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.

Highlights
  • 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
Features
Read full description

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

Shift Unit4 screens
SpeechFlow4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. SpeechFlow sells 1 one-off in-app purchase. Shift Unit asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard5 real differences · 5 level
Shift Unit versus SpeechFlow: the parameters behind the verdict, then further details
ParameterShift UnitSpeechFlow
PriceFreeFree
Rating5.0 (21 ratings)5.0 (3 ratings)
Positive reviews100.0% of reviews—
Number of ratings21 — better3
Update frequencyEvery 2 months — betterEvery 5 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, Apple Watch — betteriPhone
Requires iOS16.0 — better26.0
Further details — not scored
Size20 MB150 MB
Age rating4+4+
DeveloperDidier BurtonBasheer Abdelmalik

Customer experience

Shift Unit

All ratings21 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews9 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

SpeechFlow

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Shift Unit

No in-app purchases

1 purchases

SpeechFlow

One-time1
  • Pro - Lifetime$9.99

Questions

Is Shift Unit free?
Shift Unit is free to download, with no in-app purchases.
Is SpeechFlow free?
SpeechFlow is free to download, with in-app purchases available.
Which has better reviews, Shift Unit or SpeechFlow?
Shift Unit and SpeechFlow are both rated 5.0 out of 5 on the App Store, from 21 and 3 ratings respectively.
Do Shift Unit or SpeechFlow have ads?
Neither Shift Unit nor SpeechFlow shows ads.
Which is updated more often, Shift Unit or SpeechFlow?
Shift Unit ships an update every 2 months, and SpeechFlow every 5 months. Most recently, Shift Unit was updated on September 21, 2026 and SpeechFlow on October 1, 2026.

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