Janus Calculator vs Squiddle
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Janus Calculator
This app offers a unique dual-calculator interface, supporting both standard and Reverse Polish Notation. It features programmable functions, extensive scientific and financial tools, and includes physical constants and an advanced option calculator.
- Dual calculator interface (Standard and RPN)
- Programmable functions
- Finance and scientific functions
- Physical constants
- Black-Scholes option calculator
- Implied value calculation
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Two-sided calculator. Side A uses Standard Notation, Side B uses Reverse Polish Notation. Both calculators are programmable, include various finance and scientific functions, and the values of 45 physical constants. Also includes a Black-Scholes option calculator, including calculation of implied values for each of the inputs.
Squiddle
This app allows you to quickly sketch ideas, notes, or reminders using your finger on your phone. You can then save these doodles, share them with others, or upload them to cloud storage. It's a fun and flexible way to capture thoughts on the go.
- Finger sketching and note-taking
- Save and share doodles
- Cloud storage integration
- Mark up photos and images
- Set doodle reminders
- Organize notes with tags
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Squiddle is the fun way to doodle and take notes on the go! Squiddle gives you the freedom to use your finger to sketch your thoughts right onto your phone at the exact moment they are on your mind. Then you can save them for later or share them with friends. Be silly, serious, or both: it’s up to you. Draw a mustache on your friend, sketch an expressive idea for your spouse or share a brainstorming byproduct with a coworker. Squiddle does the remembering so your mind can be free to think! Features include: - Quickly sketch an idea and share it with friends or upload it to your cloud storage (Evernote, Dropbox, Google Drive, etc - must have those apps installed) - Mark up a photo or image with important annotations or entertaining messages - Use a doodle to set a lively reminder for yourself - Organize notes into a series of tags
Screenshots
Verdict
The clearest difference is rating: Squiddle at 5.0 against Janus Calculator's 2.0. Squiddle also leads on update cadence (every 2 months vs every 45 months). Janus Calculator's advantage is device support (3 vs 1). On price, ratings volume, ads and in-app purchases 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.
Squiddle holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
Janus Calculator ships an update every 45 months, Squiddle every 2 months. The most recent releases landed on June 3, 2026 and September 17, 2026 respectively.
| Parameter | Janus Calculator | Squiddle |
|---|---|---|
| Price | Free | Free |
| Rating | 2.0 (1 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 83.3% of reviews | — |
| Number of ratings | 1 | 1 |
| Update frequency | Every 45 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 26.2 | 26.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Geoffrey Domm | Think Tank Productions |
Customer experience
Janus Calculator
Squiddle
In-app purchases
Janus Calculator
No in-app purchases
Squiddle
No in-app purchases
Questions
Is Janus Calculator free?
Is Squiddle free?
Which has better reviews, Janus Calculator or Squiddle?
Do Janus Calculator or Squiddle have ads?
Which is updated more often, Janus Calculator or Squiddle?
Other comparisons
