GO vs CNVRT
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GO
This app offers a highly accurate simulation of the classic HP-29C programmable scientific calculator. It features RPN input, extensive storage registers, and a wide range of mathematical and statistical functions. Users can program complex calculations, import/export programs, and view detailed program information.
- RPN input
- 10-digit LED display simulation
- Four stack registers
- Thirty storage registers
- Extensive math and statistical functions
- Programmable with 198 steps
- Program import/export
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GO-29 SciRPN closely simulates the venerable HP-29C Programmable Pocket Scientific Calculator from 1977. Virtually indistinguishable from the real item in operation, GO-29 is a powerful yet simple retro calculator. • RPN (Reverse Polish Notation) • 10-digit LED calculator display, 10-99 to 10+99 • Four stack registers with roll down • Thirty storage registers with arithmetic memory operators: ◦ 10 primary registers ◦ 6 statistical registers ◦ 14 indirect registers • Math, trigonometric, polar/rectangular, sexagesimal/decimal, logarithmic, statistical, power and other miscellaneous functions • Programmable, with labels, subroutines, branching, conditionals, indirect addressing, annotated program listing, and memory for 198 program steps • Library of Sample Programs • Fast, slow or single step program execution • Program import via pasteboard or from other Apps • Program export via printer, email, pasteboard or to others Apps • iTunes program File Sharing • Two additional windows with views of: ◦ stack/storage registers ◦ keystroke log ◦ program source code ◦ program documentation • Copy-from and Paste-to the calculator display • Simple Paper Tape annotations
CNVRT
Instantly convert over 200 units across 20 measurement categories, from weight and length to temperature and data storage. This tool simplifies metric and Imperial conversions for STEM professionals and everyday users alike.
- Over 200 units supported
- 20 measurement categories
- Instant conversions
- Metric and Imperial units
- Optimized for Apple devices
- STEM and everyday use
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CNVRT allows you to convert any unit of measurement easily and instantly so you never have to do it yourself or struggle with metric and Imperial units. CNVRT supports over 200 different units and 20 different measurements, each with its own unique color. These measurements include: • Weight or Mass • Length or Distance • Temperature • Speed • Area • Time or Duration • Data Storage • Angle • … and many more! CNVRT is optimized for iPhone, iPad and macOS. Whether you are in STEM or just for everyday use, CNVRT will simplify your life.
Screenshots
Verdict
The clearest difference is review sentiment: GO at 100% against CNVRT's 50%. GO also leads on rating (5.0 vs 4.5). CNVRT's advantage is update cadence (every 2 weeks vs every 6 weeks) and price ($4.99 vs $6.99). On ads, in-app purchases, monetization model 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
GO costs $6.99 and CNVRT $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
GO holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 5 and 19 respectively. Written reviews point the same way: 100% of GO's written reviews are positive against 50% of CNVRT's.
GO ships an update every 6 weeks, CNVRT every 2 weeks. The most recent releases landed on September 22, 2026 and September 18, 2026 respectively.
| Parameter | GO | CNVRT |
|---|---|---|
| Price | $6.99 | $4.99 — better |
| Rating | 5.0 (5 ratings) — better | 4.5 (19 ratings) |
| Positive reviews | 100.0% of reviews — better | 50.0% of reviews |
| Number of ratings | 5 | 19 — better |
| Update frequency | Every 6 weeks | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, Mac, Apple TV | iPhone, iPad, iPod, Mac |
| Requires iOS | 16.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 26 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Steve Lidie | Pascal Andraos |
Customer experience
GO
CNVRT
In-app purchases
GO
No in-app purchases
CNVRT
No in-app purchases









