Comparison

#Room vs K4 Tools

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

Head to head
About

#Room

Never forget your hotel room number again. This app helps you quickly recall your room details and can also store numbers for friends and colleagues. It's ideal for frequent travelers and airline crews.

Highlights
  • Store hotel room number
  • Recall room number instantly
  • Store friends' room numbers
  • Currency conversion
  • Widget support
Features
Read full description

#Room helps you to keep track of your hotel room. You are staying abroad and want to know the exchange rate? #Room will help you doing the conversion. You are traveling a lot and changing hotel nearly every day? It gets hard to remember the room number, especially if you had a nice evening and return back in the hotel late night. You are looking for your keycard and you have no idea anymore what is your room number. As you do not need to carry the key cover with you nobody beside you knows your room number if you lose your key. Time to check your smartphone's #Room App or its new Widget. It instantly shows your room number so you never get lost on the hotel floors. Never forget a room number again. And the best, you can also store room numbers of your fellow friends and colleagues travelling with you. Also ideal for airline crews who are facing this problem day by day. So get our app to stay smarter. Enjoy #Room and send us feedback on how to improve your experience.

About

K4 Tools

This app assists flight crews with inflight fuel and time calculations, integrating with flight plans. Features include scanning flight data, calculating duty and rest periods, and managing crew breaks. It also helps verify fuel accuracy and pre-flight weather conditions.

Highlights
  • Magic Scanner for FMS data
  • Duty/Rest period calculation
  • Crew break scheduling
  • Fuel receipt verification
  • Pre-flight weather checks
  • iPad optimized interface
Read full description

K4 Tools helps flight crews complete inflight fuel and time checks quickly and accurately — with calculators built around your current flight plan. Highlights: • Magic Scanner: Use the iPhone camera on support models to scan the FMS Position Report and auto-fill required fields. • Duty/Rest Calculator: See Max Duty End, Latest Legal Takeoff, and required rest based on crew size, sequence, and consent — with live remaining duty. • Crew Rest: Share break schedules and keep track visually on the crew break Timeline. • Fuel Checks: Verify pre‑flight fuel upload accuracy across multiple receipts. • Pre-flight weather verification via calculated ETA's at Departure, Destination, Alternate, and ETP Airports. • iPhone + iPad: Optimized for both portrait and landscape use on iPad — including mounted flight-deck configurations.. Limits and warnings appear when operational or contractual thresholds are approached or likely to be exceeded, so you can take corrective action early. Planned updates: - Pro Versioncoming soon! - LogTen Pro integration - tap a button and import all of your flight information with the tap of a button - Crew Rest Alarms automatically set for selected break period. - Custom Crew Rest break lengths

Screenshots

#Room4 screens
K4 Tools1 screens

Verdict

The call

The clearest difference is rating: K4 Tools at 5.0 against #Room's 4.5. #Room's advantage is iOS requirement (12.0 vs 26.0). On price, ratings volume, update cadence and ads 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.

ReceptionRating · Positive reviews · Number of ratings

K4 Tools holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

UpkeepUpdate frequency

#Room ships an update every 2 weeks, K4 Tools monthly. The most recent releases landed on October 24, 2026 and October 22, 2026 respectively.

Scorecard2 real differences · 8 level
#Room versus K4 Tools: the parameters behind the verdict, then further details
Parameter#RoomK4 Tools
PriceFreeFree
Rating4.5 (2 ratings)5.0 (1 ratings) — better
Positive reviews100.0% of reviews—
Number of ratings2 — better1
Update frequencyEvery 2 weeks — betterMonthly
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPad
Requires iOS12.0 — better26.0
Further details — not scored
Size16 MB31 MB
Age rating4+4+
DeveloperSebastian KloseJames Everett

Customer experience

#Room

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

K4 Tools

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

#Room

No in-app purchases

None

K4 Tools

No in-app purchases

Questions

Is #Room free?
#Room is free to download, with no in-app purchases.
Is K4 Tools free?
K4 Tools is free to download, with no in-app purchases.
Which has better reviews, #Room or K4 Tools?
K4 Tools is rated higher. #Room averages 4.5 out of 5 from 2 ratings, while K4 Tools averages 5.0 from 1 ratings.
Do #Room or K4 Tools have ads?
Neither #Room nor K4 Tools shows ads.
Which is updated more often, #Room or K4 Tools?
#Room ships an update every 2 weeks, and K4 Tools monthly. Most recently, #Room was updated on October 24, 2026 and K4 Tools on October 22, 2026.

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