Comparison

iokey vs RexWatchAlarm

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

Head to head
About

iokey

Features
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Short Description: This is the solution using smartphone to control and open the lock/door lock. Detail Description: The lock can be opened without physical key or password using the iokey (Bulukey) application after installing the door lock and registering the user on Iokey (Bulukey) service. Additionally, User can use powerful central managing function such as control mode, approval mode for the lock based on the schedule and so on. # Main Function # 1) Contactless Lock Opening Function - The lock can be opened using the button at smartphone application. - Switch from physical key to logical key (No loss, No copy) 2) Manager Approval Mode Based on the Schedules - The message will be transmitted to the manager in real time when the user tries to open the lock which sets as an important one. After the manager gives approval to open the lock, the user can open it. 3) Control Mode Based on the Schedules - Depending on the user or working hours, the authority for handling the lock can be set. 4) Easy Access Authority Set Up - Manager can give or collect access authority to user easily even for multiple locks or door locks 5) Checking the History of Access - Every history such as opening the lock, changing parameters or making a report saves to website. Manager can check the history easily. Customer Service : dambeesoft@gmail.com (Weekday 9:00-18:00 KST)

About

RexWatchAlarm

Features
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λ‹Ήμ‹ μ˜ 손 μ•ˆμ—μ„œ, ꡐ톡 κ°μ‹œμ˜ λͺ¨λ“  것! RexWatchAlarm은 ꡐ톡 상황을 μ‹€μ‹œκ°„μœΌλ‘œ λͺ¨λ‹ˆν„°λ§ν•˜κ³ , μ‚¬μš©μžμ—κ²Œ μ •ν™•ν•˜κ³  λΉ λ₯΄κ²Œ μ•Œλ¦Όμ„ μ œκ³΅ν•˜λŠ” 톡합 μ•ŒλžŒ μ•±μž…λ‹ˆλ‹€. 카메라 μ„œλ²„λ‘œλΆ€ν„° μˆ˜μ‹ λ˜λŠ” 이벀트 데이터λ₯Ό λ°”νƒ•μœΌλ‘œ, μ°¨λŸ‰ 번호, μœ„μΉ˜, 사건 μ’…λ₯˜, 이미지 λ“± 핡심 정보λ₯Ό μ‚¬μš©μžμ—κ²Œ μ§κ΄€μ μœΌλ‘œ μ „λ‹¬ν•©λ‹ˆλ‹€.

Screenshots

iokey4 screens
RexWatchAlarm3 screens

Verdict

The call

The clearest difference is update cadence: RexWatchAlarm at every 2 weeks against iokey's every 4 months. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

iokey ships an update every 4 months, RexWatchAlarm every 2 weeks. The most recent releases landed on September 24, 2026 and September 9, 2026 respectively.

Scorecard1 real difference Β· 5 level
iokey versus RexWatchAlarm: the parameters behind the verdict, then further details
ParameteriokeyRexWatchAlarm
PriceFreeFree
Update frequencyEvery 4 monthsEvery 2 weeks β€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.0 β€” better15.1
Further details β€” not scored
Size14 MB33 MB
Age rating4+4+
DeveloperDambee Technology Co., Ltd.Rexgen Inc.

In-app purchases

None

iokey

No in-app purchases

None

RexWatchAlarm

No in-app purchases

Questions

Is iokey free?
iokey is free to download, with no in-app purchases.
Is RexWatchAlarm free?
RexWatchAlarm is free to download, with no in-app purchases.
Do iokey or RexWatchAlarm have ads?
Neither iokey nor RexWatchAlarm shows ads.
Which is updated more often, iokey or RexWatchAlarm?
iokey ships an update every 4 months, and RexWatchAlarm every 2 weeks. Most recently, iokey was updated on September 24, 2026 and RexWatchAlarm on September 9, 2026.

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