Battery Level - Portal
By An Trinh
Battery Level - Portal is a themed battery monitor and soundboard for iOS, designed for fans of the Portal game series.
The App DNA
What makes this app unique?
The app removes the monotony of standard battery monitoring by replacing system visuals with Aperture Science-themed assets, serving a niche audience that prioritizes aesthetic customization over utility performance.
For Fans of the Portal video game series looking for themed device customization and battery monitoring tools.
What does it look like?
Key features
Visual battery level display modeled after Aperture Science test chamber signs, creating a brand-specific aesthetic that drives organic acquisition.
Integrated audio clips from the Portal game series, serving as a primary retention loop for fans.
Audio notifications of current charge percentage, localized to device language settings.
How much does it cost?
The app is distributed as a free utility with no visible in-app purchases or subscription tiers, relying entirely on brand association for distribution.
Velocity
Dormant developmentopaqueShow more...
Battery Level - Portal has been inactive for 2,034 days. The development history shows no updates or feature additions in over five years, indicating the project is no longer supported. There is no evidence of ongoing maintenance or operational activity.
Who built it?
An Trinh
6 apps tracked · Utilities
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Days since I had sexUser Sentiment
What do users think recently?
The recent review mood reads excited. Users appreciate the soundboard provides a humorous and engaging experience for fans of the source material and the battery widget offers a clean and efficient utility without intrusive animations or visual clutter.
How are ratings & reviews evolving?
What users say, by theme
- The soundboard provides a humorous and engaging experience for fans of the source material
- The battery widget offers a clean and efficient utility without intrusive animations or visual clutter
- The battery percentage display occasionally shows inaccurate data compared to the actual system reading
11 of 11 recent reviews analyzed · moderate confidence · Excited overall
Read the full review analysisUnlock 1 more frustration theme and 2 user requests, each backed by review evidence.
Access the full report for freeCompetition
Competitive landscape for Battery Level - Portal
How's the Utilities market?
Battery Level - Portal occupies a niche utility space, holding a 4.23 rating across 26 total reviews. The lack of updates for over five years signals that the app is a legacy fan project rather than a competitive market entrant.
Read the market outlookThe rivals identified
Unlock the deeper market read.
Access the full report for freeThe Analyst's Read
Key takeaways for Battery Level - Portal
Where is it heading?
The market for themed utilities is consolidating around system-native widgets, leaving Battery Level - Portal in a legacy position. Without a shift toward active maintenance or content expansion, the app will likely see a slow decline in relevance as iOS updates eventually break its core functionality.
- The five-year update gap indicates a maintenance-only posture, which erodes long-term platform compatibility and user trust.
- High sentiment scores from the core fan base suggest that the existing feature set remains sufficient for the target audience.
The SWOT
- Aperture Science-themed aesthetic creates a defensible niche appeal for Portal fans.
- Minimalist widget design removes visual clutter, sustaining high satisfaction among core users.
- Expanding the soundboard with Portal 2 assets would satisfy the top-requested user feature.
- Text-to-speech integration would provide a modern, personalized alternative to static audio clips.
Next best moves
Pivot to a community-driven content model because users request more Portal 2 lines → unlock long-term retention.
+ 1 more prioritized moveThe counter-intuitive read
The app's lack of updates is its primary retention mechanism, as the static…
Read the full takeBottom line
Battery Level - Portal relies on franchise nostalgia to retain users, but the five-year development silence makes its core utility increasingly fragile. Addressing the reported battery-reading inaccuracies would stabilize the experience for the existing fan base, even without new feature investment.
Unlock 2 critical frictions, 2 market threats, 1 more prioritized move and the analyst’s take.
Access the full report for freeFAQ
Is Battery Level - Portal safe to use for battery monitoring?
Does Battery Level - Portal work on the latest iOS versions?
Are there other Portal-themed apps for my device?
Sources
- [1] App Store
Report last updated