RRTool vs See through Memo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RRTool
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RRTool is the extended features companion app to your RR1090 digital refractometer and similar Bay Area Instruments devices. It communicates via encrypted BLE with your device, mirroring its buttons and providing extended functionalities such as: cloud spreadsheet logging of your measurements, enabling of ATC for Brix, QR code generation and device firmware upgrades.
See through Memo
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Memo app with a transparent background that makes it easy to type while looking at the letters and numbers written under the iPhone (this app)
Screenshots
Verdict
The clearest difference is ads: RRTool at none against See through Memo's shown. See through Memo's advantage is update cadence (fortnightly vs every 4 months). On price, in-app purchases, device support 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
RRTool ships an update every 4 months, See through Memo fortnightly. The most recent releases landed on October 3, 2026 and October 7, 2026 respectively.
| Parameter | RRTool | See through Memo |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 months | Fortnightly — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0 — better | 15.8.3 |
| Further details — not scored | ||
| Size | 5 MB | 35 MB |
| Age rating | 4+ | 4+ |
| Developer | Bay Area Instruments Inc. | Hideaki Uchikoshi |
In-app purchases
RRTool
No in-app purchases
See through Memo
No in-app purchases
Questions
Is RRTool free?
Is See through Memo free?
Do RRTool or See through Memo have ads?
Which is updated more often, RRTool or See through Memo?
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