555 Calc vs GPSメモ
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
555 Calc
This utility app helps engineers and hobbyists calculate resistor values for circuits using the Timer IC 555. Simply input frequency, duty ratio, and capacitor values to get the required resistor outputs.
- Calculate resistor values
- Input frequency
- Input duty ratio
- Input capacitor value
- Timer IC 555 circuit design
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This App calculates registors value, when designing the circuit using Timer IC 555. How to (1) Input Frequency value. (2) Input Duty Ratio. (3) Input C1 Value. (4) Touch ‘Calculate’ button. (5) Registors value will be displayed. Note. * Set Duty Ratio to 50 ~ 99. * If you set Duty Ratio to 50, R1 value will be set to 0.
GPSメモ
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端末のGPSを使って現在の場所の緯度、経度を取得できます。 取得した位置情報にタイトルやメモをつけて保存し、リストで表示できます。 取得したデータから地図を表示したり、JSON形式でテキストに出力する機能もあります。
Screenshots
Verdict
The clearest difference is update cadence: GPSメモ at every 4 months against 555 Calc's every 20 months. On price, ads, in-app purchases and device support 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.
555 Calc ships an update every 20 months, GPSメモ every 4 months. The most recent releases landed on September 27, 2026 and October 9, 2026 respectively.
| Parameter | 555 Calc | GPSメモ |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (3 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 20 months | Every 4 months — better |
| Ads | Yes | Yes |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 11.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 18 MB | 65 MB |
| Age rating | 4+ | 4+ |
| Developer | Jibiki Works | kazuya koshiyama |
In-app purchases
555 Calc
No in-app purchases
GPSメモ
No in-app purchases
