Pigeon Calculator vs PrefixCalc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Pigeon Calculator
This calculator features unique character sound effects for each button press, including pigeons, crows, and eagles. Performing specific calculations triggers celebratory animations, offering a whimsical and entertaining user experience.
- Character sound effects
- Customizable characters
- Celebratory animations
- Unique calculation triggers
- Whimsical user interface
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This calculator allows you to set up pigeons, crows, eagles, and pigeon people as characters. Each button press plays a sound of each character. Also, if you do a calculation the answer to which is 810, like 800+10, a PR movie of pigeon jumping celebrating pigeons will be played. If you want to see it, please try to calculate 800+10 or 700+110. Pigeons, Jet Black Lightning (Crow), King of the Universe (Eagle), familiar to those of you who play HATO Jump. And a brand new character from an unreleased game, Sexy HATO, also makes her first appearance. HATO Jump Series official website https://torigames.fctry.net/ HATO Jump Series Official Twitter https://twitter.com/hatojump Pigeon Jump Series Official YOUTUBE channel https://www.youtube.com/channel/UCGdmBTUFkcQXlcjc2GseSCg
PrefixCalc
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This calculator supports Metric‑prefix such as kilo and giga. The calculator supports quetta (10^30) and quecto (10^-30), which were added in 2022. Main Functions ・Support for arithmetic operations (+ - ×÷) ・Results converted to Japanese numerals for display ・Delete one character at a time with the "DEL" button Press and hold to delete all ・Press and hold to copy calculation formulas and results English (Short scale, Long scale) and Chinese numerals can also be selected. ・Calculations that include prefixes such as 2M+1k, 2M×1μ, etc. Note: ・Very large numbers that exceed 200 digits may be rounded off for display and calculation purposes. Please note this when precision is required. ・Short scale and Long scale are currently supported up to 10^198. ・Kanji notation is supported up to 10^72. If it is greater than the number, it will be displayed in Arabic numerals.
Screenshots
Verdict
Pigeon Calculator and PrefixCalc are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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.
| Parameter | Pigeon Calculator | PrefixCalc |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| Update frequency | Every 3 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 11.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 80 MB | 28 MB |
| Age rating | 4+ | 4+ |
| Developer | Factory inc. (Apps) | YONAGARE LAB |
In-app purchases
Pigeon Calculator
No in-app purchases
PrefixCalc
No in-app purchases









