Comparison

蓝牙标签 vs Ruler Studio

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

Head to head

蓝牙标签

Free

🔧 Utilities

★ 2.03 ratingsView app →

Ruler Studio

Ruler, Grid & Ring Sizer

Free

🔧 Utilities

No ratingsView app →

About

蓝牙标签

Features

Read full description

在app中修改标签屏幕信息，通过蓝牙将信息投到标签屏幕。用户可以在app中切换标签屏幕显示的样式。

About

Ruler Studio

Features

Read full description

Precise measuring tools Ruler, grid, calibration, and ring sizing in one clean workspace. Ruler & Grid Studio High-precision multi-unit rulers with a built-in grid for everyday measurements. Smart Ring Sizer Align a real ring with the guide to estimate diameter, circumference, and size. Card Calibration Use a standard card edge to improve real-world measurement accuracy. Free Measuring Toolkit Full-screen grids, scale presets, and measurement overlays are included for everyone. Precise ruler, grid, calibration, and ring sizing tools.

Screenshots

蓝牙标签4 screens

Ruler Studio4 screens

Verdict

The call

The clearest difference is in-app purchases: 蓝牙标签 at none against Ruler Studio's 1. 蓝牙标签 also leads on update cadence (every 9 days vs every 6 weeks). Ruler Studio's advantage is iOS requirement (13.0 vs 15.0). On price, ads 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. Ruler Studio sells 1 one-off in-app purchase. 蓝牙标签 asks for nothing beyond the download.

UpkeepUpdate frequency

蓝牙标签 ships an update every 9 days, Ruler Studio every 6 weeks. The most recent releases landed on November 12, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 6 level

蓝牙标签 versus Ruler Studio: the parameters behind the verdict, then further details
Parameter	蓝牙标签	Ruler Studio
Price	Free	Free
Rating	2.0 (3 ratings) — better	—
Positive reviews	33.3% of reviews	—
Number of ratings	3 — better	—
Update frequency	Every 9 days — better	Every 6 weeks
Ads	No	No
In-app purchases	No — better	Yes
Devices	iPhone, iPod	iPhone, iPad, iPod — better
Requires iOS	15.0	13.0 — better
Further details — not scored
Size	34 MB	19 MB
Age rating	4+	4+
Developer	Shenzhen Picksmart Technology Co., Ltd.	Spyridon Bousios

In-app purchases

None

蓝牙标签

No in-app purchases

1 purchases

Ruler Studio

One-time1

Ruler Pro Lifetime$2.99

Questions

Is 蓝牙标签 free?

蓝牙标签 is free to download, with no in-app purchases.

Is Ruler Studio free?

Ruler Studio is free to download, with in-app purchases available.

Do 蓝牙标签 or Ruler Studio have ads?

Neither 蓝牙标签 nor Ruler Studio shows ads.

Which is updated more often, 蓝牙标签 or Ruler Studio?

蓝牙标签 ships an update every 9 days, and Ruler Studio every 6 weeks. Most recently, 蓝牙标签 was updated on November 12, 2026 and Ruler Studio on October 31, 2026.