Comparison

AngleLab vs SleepSign

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

Head to head
About

AngleLab

Features
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AngleLab is an app that attaches two smart sensors and acquires the angle between segments. ■Overview Since it is a digital goniometer application between two segments, when applied to the human body, the relative angle between the parts where the sensor is attached can be obtained as 3-axis data. Sensor data can be monitored in real-time while being recorded on an iPad. In addition, by enabling video recording with the device’s video camera, it is possible to synchronize sensor data and video and play back after measurement. In addition, the resulting data can be output externally as CSV. ■For checking body range of motion! For example, when sensors are attached to the pelvis and thigh, joint angles of X, Y, Z axis: flexion/extension, adduction/abduction, internal rotation/external rotation can be obtained in real time, graphed, and numerical values can be output as CSV. ■ Requirements Xsens DOT sensor is prerequisite to use this app. In addition, it is necessary to obtain a license key issued by HELTEC Co., Ltd. For more information, please contact sensing@heltec.co.jp

About

SleepSign

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SleepSign-Cloud (スリープサイン クラウド)は、研究の参加者向けのアプリです。 研究機関からの指示に従って、操作ください。 ・日々の活動量計データを読み込みクラウドへ送信・登録します. ・就床・離床時刻を登録・修正します.  ※研究内容によっては登録・修正できない場合もあります. ーーーーーーー よくあるご質問 ーーーーーーー 下記のWebサイトに掲載しております。 https://support.sleepsign-cloud.jp/faq/index.html ーーーーーーー 対応機種とご注意点 ーーーーーーー ・NFC(フェリカ)を使用するため、未搭載の端末(iPhone6/6S以前、iPad)ではご利用できません。 ・インターネット接続ができない環境でのご利用はできません。

Screenshots

AngleLab4 screens
SleepSign3 screens

Verdict

The call

The clearest difference is update cadence: SleepSign at monthly against AngleLab's every 3 months. AngleLab's advantage is iOS requirement (13.0 vs 15.5). 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

AngleLab ships an update every 3 months, SleepSign monthly. The most recent releases landed on September 12, 2026 and September 17, 2026 respectively.

Scorecard2 real differences · 4 level
AngleLab versus SleepSign: the parameters behind the verdict, then further details
ParameterAngleLabSleepSign
PriceFreeFree
Update frequencyEvery 3 monthsMonthly — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS13.0 — better15.5
Further details — not scored
Size41 MB32 MB
Age rating17+12+
DeveloperHELTEC Co., LtdKissei Comtec Co., Ltd.

In-app purchases

None

AngleLab

No in-app purchases

None

SleepSign

No in-app purchases

Questions

Is AngleLab free?
AngleLab is free to download, with no in-app purchases.
Is SleepSign free?
SleepSign is free to download, with no in-app purchases.
Do AngleLab or SleepSign have ads?
Neither AngleLab nor SleepSign shows ads.
Which is updated more often, AngleLab or SleepSign?
AngleLab ships an update every 3 months, and SleepSign monthly. Most recently, AngleLab was updated on September 12, 2026 and SleepSign on September 17, 2026.

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