Comparison

NFC Eink vs JonGrow

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

Head to head

NFC Eink

Free

🔧 Utilities

★ 2.01 ratingsView app →

Kids Height Tracker

About

NFC Eink

This utility app leverages NFC technology to transmit images and display content on compatible devices. It requires an iPhone 8 or later running iOS 13 or above.

Highlights

NFC image transmission
Screen display functionality
NFC read/write capabilities
Compatible with iPhone 8 and above
Requires iOS 13 and above

Read full description

一款基于NFC读写功能开发的工具型APP，通过无源NFC技术向我们的指定产品传送图像，刷屏等功能。机型要求: iPhone8及以上系统要求: ios13及以上

About

JonGrow

Features

Read full description

Witnessing is the best gift you can give your child. Children grow up so quickly, and the joy of seeing them grow taller shouldn't just remain in our memories. JonGrow is dedicated to recording every key milestone in a child's growth in the simplest way possible.

Screenshots

NFC Eink2 screens

JonGrow3 screens

Verdict

The call

The clearest difference is update cadence: JonGrow at fortnightly against NFC Eink's every 2 months. NFC Eink's advantage is iOS requirement (13.0 vs 17.6). 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

NFC Eink ships an update every 2 months, JonGrow fortnightly. The most recent releases landed on September 25, 2026 and October 12, 2026 respectively.

Scorecard2 real differences · 8 level

NFC Eink versus JonGrow: the parameters behind the verdict, then further details
Parameter	NFC Eink	JonGrow
Price	Free	Free
Rating	2.0 (1 ratings) — better	—
Positive reviews	0.0% of reviews	—
Number of ratings	1 — better	—
Update frequency	Every 2 months	Fortnightly — better
Ads	No	No
In-app purchases	No	No
Monetization	Free	—
Devices	iPhone, iPod	iPhone, iPad
Requires iOS	13.0 — better	17.6
Further details — not scored
Size	1 MB	11 MB
Age rating	4+	9+
Developer	博之陆	PuffinStudio

In-app purchases

None

NFC Eink

No in-app purchases

None

JonGrow

No in-app purchases

Questions

Is NFC Eink free?

NFC Eink is free to download, with no in-app purchases.

Is JonGrow free?

JonGrow is free to download, with no in-app purchases.

Do NFC Eink or JonGrow have ads?

Neither NFC Eink nor JonGrow shows ads.

Which is updated more often, NFC Eink or JonGrow?

NFC Eink ships an update every 2 months, and JonGrow fortnightly. Most recently, NFC Eink was updated on September 25, 2026 and JonGrow on October 12, 2026.