Comparison

Signal Light vs Citation Mapper

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

Head to head
About

Signal Light

Communicate with others using Morse code via your device's flash. This tool is useful for signaling in various situations, from camping to emergencies, and can also function as a manual strobe light.

Highlights
  • Morse code communication
  • Manual strobe light
  • SOS signaling
  • Line-of-sight tool
  • Flashlight spotlight
Features
Read full description

Note: Your device must have a flash to use this app! Camper, Sailor, Soldier, Spy A handy tool for campers, scouts, boaters (and yes, spies)! Use it to communicate with distant friends using Morse code, tap out a beat for a human-powered strobe light, or get the attention of rescuers. This app is based on the old mechanical “signal lamp” which is a manually-controled shuttered spotlight used on warships to communicate securely while maintaining radio silence. Modern navies still use signal lamps, but now use infrared wavelengths and night vision goggles! Extra fun: Put a paper towel tube on the flash to make a tight spotlight and you’ve got a line-of-sight communication tool that only you and your partner can see. p.s. SOS is . . . – – – . . .

About

Citation Mapper

Features
Read full description

Citation Mapper helps lawyers, students, and legal researchers understand how cases connect. Search case law, build visual citation networks, and analyze relationships that matter. Follow cases and searches to stay current, get real‑time alerts, and keep key findings organized across devices. Key Features 1. Case search with courts, dates, judges, and docket filters 2. Visual citation networks with weighted relationships and influence scores 3. One‑tap network building from a seed case with live progress tracking 4. AI‑assisted insights, citation explanations, and relationship summaries (Premium) 5. Why‑Citations summaries in PDF/Word (Premium) 6. Judges intelligence hub with financial disclosures and opinions 7. Oral‑argument transcripts with downloadable audio 8. Real‑time alerts for cases and saved searches 9. Save and organize cases across devices 10. Export and print networks (PDF/PNG/SVG) 11. Clean, dark‑mode friendly interface Premium Access Unlock advanced AI analysis, summaries, exports, and expanded limits with a subscription. Subscription management and renewal are handled in the mobile app.

Screenshots

Signal Light2 screens
Citation Mapper4 screens

Verdict

The call

The clearest difference is price: Citation Mapper at Free against Signal Light's $0.99. Citation Mapper also leads on update cadence (daily vs every 25 months). Signal Light's advantage is in-app purchases (none vs 6). On ads, device support and iOS requirement 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

Citation Mapper is free to download; Signal Light costs $0.99 up front. Citation Mapper sells 6 one-off in-app purchases. Signal Light asks for nothing beyond the download.

UpkeepUpdate frequency

Signal Light ships an update every 25 months, Citation Mapper daily. The most recent releases landed on September 8, 2026 and September 10, 2026 respectively.

Scorecard3 real differences · 7 level
Signal Light versus Citation Mapper: the parameters behind the verdict, then further details
ParameterSignal LightCitation Mapper
Price$0.99Free — better
Rating4.0 (1 ratings) — better
Positive reviews0.0% of reviews
Number of ratings1 — better
Update frequencyEvery 25 monthsDaily — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS12.0 — better13.0
Further details — not scored
Size21 MB26 MB
Age rating4+4+
DeveloperBryan WuAdeyemi Salau

In-app purchases

None

Signal Light

No in-app purchases

6 purchases

Citation Mapper

One-time6
  • Professional Monthly$24.99
  • Premium Monthly$49.99
  • Enterprise Monthly$99.99
Show 3 more
  • Professional Yearly$239.99
  • Premium Yearly$479.99
  • Enterprise Yearly$959.99

Questions

Is Signal Light free?
Signal Light costs $0.99, with no in-app purchases.
Is Citation Mapper free?
Citation Mapper is free to download, with in-app purchases available.
Do Signal Light or Citation Mapper have ads?
Neither Signal Light nor Citation Mapper shows ads.
Which is updated more often, Signal Light or Citation Mapper?
Signal Light ships an update every 25 months, and Citation Mapper daily. Most recently, Signal Light was updated on September 8, 2026 and Citation Mapper on September 10, 2026.

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