RRTool vs Silly Caps
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.
Silly Caps
Quickly convert your typed text or clipboard content into various fun and sarcastic styles. Easily copy the transformed text and use it in your messages or social media posts.
- Alternating text conversion
- Sarcastic text styles
- Clipboard import
- Clipboard export
- Multiple text styles
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Whether you were looking to write a sarcastic response to someone or just write in silly styled text, you can quickly transform your text into various styles. Just start typing or import something from your clipboard (even shared from your Mac), choose a style then send it back to the clipboard and use it.
Screenshots
Verdict
The clearest difference is in-app purchases: RRTool at none against Silly Caps's 2. RRTool also leads on update cadence (every 4 months vs every 11 months) and device support (3 vs 1). On price 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
Both are free to download. Silly Caps sells 2 one-off in-app purchases. RRTool asks for nothing beyond the download.
RRTool ships an update every 4 months, Silly Caps every 11 months. The most recent releases landed on October 3, 2026 and October 7, 2026 respectively.
| Parameter | RRTool | Silly Caps |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Number of ratings | — | 2 — better |
| Update frequency | Every 4 months — better | Every 11 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 14.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 5 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Bay Area Instruments Inc. | Michael Hodges |
In-app purchases
RRTool
No in-app purchases
Silly Caps
- Buy Me a Small Coffee$0.99
- Buy Me a Large Coffee$2.99
