Comparison

Seaweeed vs Physics Labs

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

Head to head
About

Seaweeed

Features
Read full description

时光海苔是一款把“信息→载体→未来”串联起来的工具。你可以将一段文字、一个心愿或某个秘密,封存进图片、二维码或NFC标签中,辅以加密与时间设定,让它在某个不经意的时间点被再次想起、被再次读到。就像投向海里的漂流瓶,信息在时光与偶然中流动,被未来的你或陌生人发现。 主要功能: - 图片时间胶囊:把文字隐写进图片中,设定解锁时间或密码 - 二维码时间胶囊:将信息生成带时间/密钥的二维码 - NFC时间胶囊:把数据写入NFC标签,配合时间与密钥开启 - 漂流瓶模式:使用默认密码或开放密钥,让偶遇的人也能解锁 - 私密模式:自定义密码,仅信息持有者可解密 安全与隐私: - 本地处理:所有加解密均在本地完成,不上传到服务器 - 可控权限:仅在需要时请求相机/相册/NFC等权限 - 透明可控:你决定信息何时、向谁、以何种介质出现 适用场景: - 把给未来的信写进今天的图片里 - 与朋友之间的“时间约定”与纪念日 - 课堂/活动中的“盲投漂流瓶”互动 - 作品、展览中的叙事与彩蛋 “通过各介质的存储,辅以加密和时间判断,让数据通过双盲运送到未来。” 当你再次解锁那枚时间胶囊,读到的是过往的自己,也是此刻的真实。

About

Physics Labs

This app uses your device's sensors to measure various physical quantities like acceleration, magnetic fields, and sound levels. View data in coordinates or scalar magnitude, and export it to Excel for analysis. It's a digital lab for your phone.

Highlights
  • Measure acceleration, magnetic fields, and sound levels
  • View data in X, Y, Z coordinates or scalar magnitude
  • Export sensor data to Excel for analysis
  • Eliminate gravity from acceleration measurements
  • Measure atmospheric pressure
Features
Read full description

Physics Lab is all-in-one Sensor app which let you know physical entities around you like acceleration, magnetic fields, light intensity, sound decibel and much more... Physics Lab measures physical parameters by using your device sensors which typical device contain bunch of those sensors! Application give output in high precision with short intervals based on your sensor's capabilities. In Physics Lab, you can observe physical data in coordinates (X-axis, Y-axis, Z-axis) or in scalar magnitude. If you want, you can export sensor data into Excel by one click! Using export to excel feature you can obtain statistical information about your measurement. Physical quantities that can be measured Physics Lab: * Accelerometer: Measuring acceleration around your device. Output in m/s2 for x, y and z axes. Also, you can eliminate gravity from your measurements by one click and see real acceleration. * Magnetometer: Measuring magnetic field around your device. Output in µT for x, y and z axes. * Gyroscope: Measure angular inclination in x, y and z axes. Output in degree (°) * Luxmeter: COMING SOON * Barometer: Measure atmospheric pressure. Output in bar. * Noisemeter: Measure loudness around you. Output in dB. If you like our application, you can give us 5 stars. You can forward any suggestions, requests or concerns to info@grandmount.org

Screenshots

Seaweeed3 screens
Physics Labs4 screens

Verdict

The call

The clearest difference is ads: Seaweeed at none against Physics Labs's shown. Seaweeed also leads on iOS requirement (13.0 vs 15.6). Physics Labs's advantage is update cadence (every 2 weeks vs every 6 months). On price, 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

Seaweeed ships an update every 6 months, Physics Labs every 2 weeks. The most recent releases landed on October 8, 2026 and September 18, 2026 respectively.

Scorecard3 real differences · 5 level
Seaweeed versus Physics Labs: the parameters behind the verdict, then further details
ParameterSeaweeedPhysics Labs
PriceFreeFree
Positive reviews—100.0% of reviews
Update frequencyEvery 6 monthsEvery 2 weeks — better
AdsNo — betterYes
In-app purchasesNoNo
Monetization—Ad-supported
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.6
Further details — not scored
Size34 MB32 MB
Age rating17+4+
Developer琪 祁Huseyin Aykut Uludag

In-app purchases

None

Seaweeed

No in-app purchases

None

Physics Labs

No in-app purchases

Questions

Is Seaweeed free?
Seaweeed is free to download, with no in-app purchases.
Is Physics Labs free?
Physics Labs is free to download, with no in-app purchases.
Do Seaweeed or Physics Labs have ads?
Physics Labs shows ads; Seaweeed does not.
Which is updated more often, Seaweeed or Physics Labs?
Seaweeed ships an update every 6 months, and Physics Labs every 2 weeks. Most recently, Seaweeed was updated on October 8, 2026 and Physics Labs on September 18, 2026.

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