2 Field % Calc vs ロボジョイ
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
2 Field % Calc
Calculate percentages between two numbers for various uses, including resizing images and determining magnification. Ideal for DTP and web designers needing quick calculations.
- Calculate percent between two numbers
- Image resizing by percentage
- Magnification calculation
- Useful for DTP and web designers
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Calculation of percent for two numbers. Simply you input number and Dial Percent. We are using this app for resizing image with percent. Especially for resizing to different size of image. For DTP and Web designer ! Also you can calculate magnification. ( B/A = How much bigger is it ? ) We hope that this app helps your work. Thank you!! And there is "Aspect Ratio C Calc" App. Please visit our site: http://www.4us.jp We made other apps.
ロボジョイ
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ー初回特典につきー 初回ダウンロード限定で、お試しチケット（1回分無料）をプレゼント中！まずは無料でお気軽にお試しいただけます。 大人気グッズを自動で簡単に購入することが出来ます！ 操作方法は簡単！お目当ての商品名を入力して、あとは待つだけ！ 初回DLの方はお試し無料券プレゼント!! 【グッズ購入について】 ■チケット（買い切り・消費型）について ・チケットを購入することで、商品の自動購入機能をご利用いただけます。 ・購入したチケットは、商品購入の実行時に消費されます。 ■プライバシーポリシー https://sites.google.com/view/robojoyprivacy?usp=sharing ■利用規約 https://sites.google.com/view/robojoyriyoukiyaku?usp=sharing
Screenshots
Verdict
The clearest difference is in-app purchases: 2 Field % Calc at none against ロボジョイ's 3. ロボジョイ's advantage is update cadence (every 5 days vs every 30 months). On price, ads, 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. ロボジョイ sells 3 one-off in-app purchases. 2 Field % Calc asks for nothing beyond the download.
2 Field % Calc ships an update every 30 months, ロボジョイ every 5 days. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.
| Parameter | 2 Field % Calc | ロボジョイ |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 30 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 113 MB |
| Age rating | 4+ | 17+ |
| Developer | Toshihiro Nakane | Kyouhei Sakai |
In-app purchases
2 Field % Calc
No in-app purchases
ロボジョイ
- クレジット(回数券)$2.99
- クレジット５枚セット$14.99
- クレジット10枚セット$29.99
