Secure Notes (Protect your notes) vs KL500A
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Secure Notes (Protect your notes)
Keep your private thoughts and sensitive information safe with this utility. Secure your notes using a password to prevent unauthorized access and ensure your privacy.
- Password protection for notes
- Secure private note storage
- Enhanced privacy
- User-friendly interface
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Do you want to write private notes? And don't you know the way of how to secure them? Secure Notes is the app which helps you to protect your notes with a password. You don't afraid anymore if someone will read your notes.
KL500A
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KL500 A系列电压电流表是一款能测量电压、电流、功率、充放电容量、瓦时、时间等多种物理参数的新型库仑计， 同时也可以设定参数实现过压保护、欠压保护、过流保护、过功率保护、过温保护及限时保护等多种保护功能。 该仪表能够自动识别电流的方向，并且对电池容量可以进行实时监控且采用彩色液晶显示被测数据，显示信息全面、人性化。 KL500A系列电压电流表在原有功能基础上加入电压电流曲线显示及导出的功能，同时可以使用手机 APP控制显示，也可以实时对固件进行更新升
Screenshots
Verdict
The clearest difference is update cadence: KL500A at every 4 weeks against Secure Notes (Protect your notes)'s every 4 months. Secure Notes (Protect your notes)'s advantage is iOS requirement (7.1 vs 11.0). 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.
Secure Notes (Protect your notes) ships an update every 4 months, KL500A every 4 weeks. The most recent releases landed on July 7, 2026 and September 19, 2026 respectively.
| Parameter | Secure Notes (Protect your notes) | KL500A |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 4 months | Every 4 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 7.1 — better | 11.0 |
| Further details — not scored | ||
| Size | 4 MB | 31 MB |
| Age rating | 4+ | 17+ |
| Developer | Ahmet Selman Durak | 磊磊 周 |
In-app purchases
Secure Notes (Protect your notes)
No in-app purchases
KL500A
No in-app purchases
Questions
Is Secure Notes (Protect your notes) free?
Is KL500A free?
Do Secure Notes (Protect your notes) or KL500A have ads?
Which is updated more often, Secure Notes (Protect your notes) or KL500A?
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