Comparison

Petmio vs Derax

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Petmio

Features
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Petmio brings your pet’s location, activity, and health insights into one intelligent app. With high-precision GPS, advanced indoor positioning, and AI-powered insights, Petmio helps you track your pet in real time, understand their daily well-being, and stay emotionally connected through an AI pet companion—delivering safety, clarity, and peace of mind.

About

Derax

Features
Read full description

Derax is a digital wellness and self-management tool. Derax offers NFC-based app locking and unlocking services designed to help users establish a "digital detox ritual" through physical interaction, thereby improving focus and mental health. 【Important Permission: Screen Time (Family Controls)】 To implement the "NFC swipe lock/unlock" function, Derax requires access to Apple's Screen Time framework (Family Controls). Purpose: This permission allows Derax to restrict or restore access to specific apps after a successful NFC card verification, enabling the locking or unlocking experience. Privacy and Security: All data within the Block app is stored locally on your device. The Screen Time permission is used solely for local NFC verification and app restriction management; it does not read any personal usage data or upload anything to a server. How it Works: App restrictions are only applied or removed when you actively perform an NFC swipe. Derax does not monitor your screen activity, track your usage habits, or interfere with your normal phone use. Necessity: Due to iOS security restrictions, third-party apps cannot directly manage the state of other apps. Apple's Screen Time framework (Family Controls) is the only approved mechanism for this functionality. You can review or remove this permission at any time in Settings > Screen Time.

Screenshots

Petmio4 screens
Derax4 screens

Verdict

The call

The clearest difference is update cadence: Derax at every 9 days against Petmio's monthly. 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Petmio ships an update monthly, Derax every 9 days. Both last shipped on November 9, 2026.

Scorecard1 real difference · 5 level
Petmio versus Derax: the parameters behind the verdict, then further details
ParameterPetmioDerax
PriceFreeFree
Update frequencyMonthlyEvery 9 days — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.615.0 — better
Further details — not scored
Size147 MB44 MB
Age rating4+4+
Developer继海 宋Deeray GLobal Co.,Limited

In-app purchases

None

Petmio

No in-app purchases

None

Derax

No in-app purchases

Questions

Is Petmio free?
Petmio is free to download, with no in-app purchases.
Is Derax free?
Derax is free to download, with no in-app purchases.
Do Petmio or Derax have ads?
Neither Petmio nor Derax shows ads.
Which is updated more often, Petmio or Derax?
Petmio ships an update monthly, and Derax every 9 days. Most recently, Petmio was updated on November 9, 2026 and Derax on November 9, 2026.

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