Comparison

HAL vs DHD

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

Head to head
About

HAL

Engage in voice-activated conversations with an AI assistant that mimics sci-fi characters. Enjoy jokes, small talk, and get advice for various situations. Future updates aim to improve memory and accuracy.

Highlights
  • Voice input for immediate conversation
  • AI-powered jokes and small talk
  • Assistance with research and advice
  • Sci-fi movie-like AI interaction
  • Free to use
Features
Read full description

"HAL: Voice AI Assistant" is a free AI chat application that utilizes OpenAI's Chat API, allowing you to converse with an AI like those in sci-fi movies right on your smartphone. Easily usable with voice input alone, and it's free! Upon opening the app, voice input starts immediately, allowing you to casually ask questions or engage in conversation. The app's greatest charm is the AI's ability to tell jokes and have enjoyable small talk. Providing fun moments filled with laughter, just like conversations with friends and family. Moreover, it excels in various situations, such as research, love advice, or casual chats when bored. The current app has weaknesses like being unable to remember interactions or the AI conveying incorrect information. However, upcoming updates aim to resolve these issues. Experience a sci-fi movie-like future in the palm of your hand with "HAL: Voice AI Assistant" Look forward to its further evolution as a fun and convenient app.

About

DHD

This app simulates a Stargate Dial Home Device, allowing you to make phone calls to your contacts by entering a 7-glyph address. It features authentic sound effects and haptic feedback for a unique calling experience.

Highlights
  • Dial Home Device interface
  • 7-chevron locking sequence
  • Authentic sound effects
  • Haptic feedback
  • Cartouche address book
  • Swipe to re-dial
  • Swipe to delete entries
Read full description

Greetings, Tau'ri! This application simulates the Stargate Dial Home Device (DHD). Instead of establishing wormholes to distant planets, this DHD connects you to your contacts via the primitive Tau'ri communication network - also known as "phone calls." HOW IT WORKS Dial a 7-glyph address on the DHD interface. Each glyph you tap locks a chevron, accompanied by authentic sound effects and haptic feedback. Once all seven chevrons are locked, press the central activation dome to engage. If the address matches a saved contact, the call connects. If the address is unknown, you can map it to a contact from your address book for future dialing. FEATURES - Dial Home Device interface with concentric glyph rings and a central activation dome - 7-chevron locking sequence with sound effects and haptic feedback - Cartouche address book: save, view, and manage your glyph-to-contact mappings - Swipe to re-dial saved addresses with automated glyph entry - Swipe to delete entries you no longer need Whether you're a fan of the Stargate franchise or just want a unique way to call your friends, the Dial Home Device brings a bit of sci-fi fun to your day. Stargate and all related marks, logos, and concepts are trademarks of Amazon MGM Studios. This application is not affiliated with, endorsed by, or sponsored by Amazon MGM Studios.

Screenshots

HAL3 screens
DHD4 screens

Verdict

The call

The clearest difference is price: HAL at Free against DHD's $0.99. HAL also leads on rating (3.5 vs 3.0) and ratings volume (11 vs 1). DHD's advantage is ads (none vs shown) and update cadence (every 3 weeks vs every 2 months). On in-app purchases 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

HAL is free to download; DHD costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

HAL holds the better App Store score, 3.5 against 3.0. That said, the two scores are not equally well evidenced: HAL has 11 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

HAL ships an update every 2 months, DHD every 3 weeks. The most recent releases landed on October 22, 2026 and October 24, 2026 respectively.

Scorecard7 real differences · 3 level
HAL versus DHD: the parameters behind the verdict, then further details
ParameterHALDHD
PriceFree — better$0.99
Rating3.5 (11 ratings) — better3.0 (1 ratings)
Positive reviews0.0% of reviews—
Number of ratings11 — better1
Update frequencyEvery 2 monthsEvery 3 weeks — better
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supported — betterPaid
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS11.0 — better15.1
Further details — not scored
Size35 MB34 MB
Age rating17+4+
Developeryu nakamuraJarkko Asgard

Customer experience

HAL

All ratings11 ratings
Positive63.6%
Neutral0.0%
Negative36.4%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

DHD

All ratings1 ratings
Positive0.0%
Neutral100.0%
Negative0.0%

In-app purchases

None

HAL

No in-app purchases

None

DHD

No in-app purchases

Questions

Is HAL free?
HAL is free to download, with no in-app purchases.
Is DHD free?
DHD costs $0.99, with no in-app purchases.
Which has better reviews, HAL or DHD?
HAL is rated higher. HAL averages 3.5 out of 5 from 11 ratings, while DHD averages 3.0 from 1 ratings.
Do HAL or DHD have ads?
HAL shows ads; DHD does not.
Which is updated more often, HAL or DHD?
HAL ships an update every 2 months, and DHD every 3 weeks. Most recently, HAL was updated on October 22, 2026 and DHD on October 24, 2026.

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