Comparison

Holyiot vs BoltStar

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

Head to head

AI Art for E-ink

About

Holyiot

Features

Read full description

An app that can connect sensor devices through Bluetooth and display and record sensor data in real-time

About

BoltStar

Features

Read full description

This is the official companion app for the BoltStar Light-powered E-ink full-color Frame. 【About the App 】 1,One-Tap Casting: Send library photos or new shots to the frame; zoom, shrink and rotate before casting. 2,AI Creation: Turn a sentence into art prints, wallpapers and posters. New accounts get free Star Coins. 3,Auto Slideshow: Set schedules so the frame refreshes itself. 4,Device & Album Management: Rename, clear, unbind; re-cast or clean up photo history. 5,Curated Gallery: Free hand-picked photos, updated regularly. Download now and give your photos a stage.

Screenshots

Holyiot4 screens

BoltStar4 screens

Verdict

The call

The clearest difference is in-app purchases: Holyiot at none against BoltStar's 1. Holyiot also leads on iOS requirement (10.0 vs 15.0). BoltStar's advantage is update cadence (monthly vs every 3 months). 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. BoltStar sells 1 one-off in-app purchase. Holyiot asks for nothing beyond the download.

UpkeepUpdate frequency

Holyiot ships an update every 3 months, BoltStar monthly. The most recent releases landed on November 7, 2026 and November 10, 2026 respectively.

Scorecard3 real differences · 3 level

Holyiot versus BoltStar: the parameters behind the verdict, then further details
Parameter	Holyiot	BoltStar
Price	Free	Free
Update frequency	Every 3 months	Monthly — better
Ads	No	No
In-app purchases	No — better	Yes
Devices	iPhone, iPod	iPhone, iPad, iPod — better
Requires iOS	10.0 — better	15.0
Further details — not scored
Size	28 MB	30 MB
Age rating	4+	12+
Developer	Shenzhen Hong yi yun jia technology Co.,LTD	Boltstar (Shenzhen) New Energy Technology Co., Ltd.

In-app purchases

None

Holyiot

No in-app purchases

1 purchases

BoltStar

One-time1

Star 30,000$59.99

Questions

Is Holyiot free?

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

Is BoltStar free?

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

Do Holyiot or BoltStar have ads?

Neither Holyiot nor BoltStar shows ads.

Which is updated more often, Holyiot or BoltStar?

Holyiot ships an update every 3 months, and BoltStar monthly. Most recently, Holyiot was updated on November 7, 2026 and BoltStar on November 10, 2026.