Comparison

RETHLock vs SeamSmart

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

Head to head

About

RETHLock

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• Supports access to RETH locks. • Check operated records from locks. • Authorized users to open the door at any time and everywhere. • Locks suitable for apts, house, office..ect. • Requirements: IPHONE with IOS 13 or higher. BLUETOOTH Please let us know if you meet any problem while using this APP. Email: reth.twni@msa.hinet.net For additional information, please visit: https://www.rethlock.com.tw

About

SeamSmart

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SeamSmart is an iOS application that can support sewing training by presenting metrics providing feedback on how well a user can sew along a given line at a constant distance. To use the app, print one of the provided training sheets on an A4 sheet of cardboard paper, sew along the printed target line along a distance, take a photo of your training sheet, and use the app to analyze your result. SeamSmart is a supplementary iOS application to the research publication Lahaye et al., How’s Your Sewing? Investigating Metrics to Automatically Assess Sewing Expertise, CHI EA ’24

Screenshots

RETHLock4 screens

SeamSmart3 screens

Verdict

The call

The clearest difference is update cadence: SeamSmart at every 4 days against RETHLock's fortnightly. RETHLock's advantage is iOS requirement (13.0 vs 17.0). 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

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

RETHLock ships an update fortnightly, SeamSmart every 4 days. The most recent releases landed on September 22, 2026 and September 9, 2026 respectively.

Scorecard2 real differences · 4 level

RETHLock versus SeamSmart: the parameters behind the verdict, then further details
Parameter	RETHLock	SeamSmart
Price	Free	Free
Update frequency	Fortnightly	Every 4 days — better
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPod	iPhone, iPad
Requires iOS	13.0 — better	17.0
Further details — not scored
Size	59 MB	2 MB
Age rating	4+	4+
Developer	UEIHAUR ENTERPRISE CO.,LTD	RWTH Aachen University

In-app purchases

None

RETHLock

No in-app purchases

None

SeamSmart

No in-app purchases

Questions

Is RETHLock free?

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

Is SeamSmart free?

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

Do RETHLock or SeamSmart have ads?

Neither RETHLock nor SeamSmart shows ads.

Which is updated more often, RETHLock or SeamSmart?

RETHLock ships an update fortnightly, and SeamSmart every 4 days. Most recently, RETHLock was updated on September 22, 2026 and SeamSmart on September 9, 2026.