GO vs Scan Note App
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GO
This app faithfully recreates the 1975 HP-21 pocket scientific calculator, offering RPN functionality and a full suite of mathematical, trigonometric, and logarithmic functions. It features a 10-digit LED display, stack and storage registers, and a keystroke log for detailed operation tracking.
- RPN (Reverse Polish Notation)
- 10-digit LED calculator display
- Four stack registers with roll down
- One storage register
- Math, trigonometric, logarithmic functions
- Keystroke log
- Copy/Paste display functionality
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GO-21 SciRPN simulates the venerable HP-21 Pocket Scientific Calculator from 1975. Virtually indistinguishable from the real item in operation, GO-21 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 • One storage register with arithmetic memory operators • Math, trigonometric, polar/rectangular, logarithmic, power and other miscellaneous functions • One additional window with views of: ◦ stack/storage registers ◦ keystroke log • Copy-from and Paste-to the calculator display • Simple Paper Tape annotations
Scan Note App
This utility app allows you to attach QR codes to your belongings. If an item is found, the scanner is directed to your custom contact page, enabling quick and easy recovery with location notifications.
- Attach QR codes to items
- Create custom contact pages
- Receive location notifications
- Easy item recovery
- Personalized messages for finders
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Never lose your valuables again! Scan Note is the smart way to protect and recover your belongings. Attach a unique QR code to any item, and create a customizable message for whoever finds it. When someone scans the code, they're directed to your personalized contact page. For example, you could write a friendly note like "If found, please contact me at [your preferred contact method]" or include a reward message. The scanner receives your instructions, and you instantly get a notification with their location, making item recovery quick and easy. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is price: Scan Note App at Free against GO's $2.99. GO's advantage is in-app purchases (none vs 3) and ratings volume (13 vs 3). On rating, review sentiment, update cadence and ads 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
Scan Note App is free to download; GO costs $2.99 up front. Scan Note App sells 3 in-app purchases, starting at $4.99 per month. GO asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.9 for GO against 5.0 for Scan Note App. Both are backed by a comparable volume of ratings — 13 and 3 respectively. Written reviews are what separate them: 96% of GO's written reviews are positive against 100% of Scan Note App's.
GO ships an update every 2 months, Scan Note App every 6 weeks. The most recent releases landed on September 22, 2026 and August 26, 2026 respectively.
| Parameter | GO | Scan Note App |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 4.9 (13 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 95.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 13 — better | 3 |
| Update frequency | Every 2 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPad, Mac, Apple TV — better | iPhone, iPad, iPod |
| Requires iOS | 16.0 | 15.6 — better |
| Further details — not scored | ||
| Size | 15 MB | 126 MB |
| Age rating | 4+ | 4+ |
| Developer | Steve Lidie | Lilikoi Ventures, LLC |
Customer experience
GO
Scan Note App
In-app purchases
GO
No in-app purchases
Scan Note App
- Monthly Subscription$4.991 Month
- Quarterly Subscription$12.993 Months
- Annual Subscription$29.991 Year
