Acurast launches Processor Lite for iOS, an app that lets iPhone owners (from the iPhone 6s onward) share their device's computing power on a decentralized confidential cloud network. Contributors earn rewards in cACU tokens. Secured by Polkadot, the project is part of the DePIN (Decentralized Physical Infrastructure Networks) movement, whose combined market capitalization surpassed $50 billion in 2025 according to CoinDesk data. For Alessandro De Carli, founder of Acurast, this launch marks a step toward making confidential cloud computing mainstream.
What Processor Lite for iOS does
Processor Lite is an iOS app that turns an iPhone into a compute node for the Acurast network. In practice:
- Computing power sharing: the user makes their phone's unused CPU/GPU cycles and memory available;
- Confidential environment: workloads run in Trusted Execution Environments (TEE), keeping code and data isolated from the host system;
- cACU token rewards proportional to actual contribution;
- Broad compatibility: iPhone 6s and newer models, covering a long tail of devices still in circulation.
Acurast's approach focuses in particular on giving value to older or damaged devices, which can still serve as distributed computing resources. This reuse logic fits into a sustainable approach - manufacturing a new smartphone accounts for most of its carbon footprint, as Les Echos regularly points out in its analyses of the digital circular economy.
The role of Polkadot and on-chain security
Acurast is anchored on Polkadot, a modular blockchain developed by Parity Technologies. This ecosystem choice has two consequences. On the one hand, network security benefits from the shared validation mechanism of Polkadot relays. On the other hand, the smart contracts that orchestrate workload allocation and reward distribution run in an audited environment, with guaranteed transaction finality. As Maddyness noted in its coverage of European DePIN projects, anchoring to a mature layer-1 is a credibility argument for cloud operators looking to test decentralized infrastructure.
The DePIN model explained simply
DePIN (Decentralized Physical Infrastructure Networks) refers to a category of protocols that economically incentivize individuals or businesses to provide physical infrastructure - bandwidth, storage, computing, IoT sensors - in exchange for tokens. The model challenges the historical concentration of the cloud (AWS, Azure, GCP) by building more open, distributed alternatives.
Several DePIN categories coexist:
According to a FrenchWeb analysis of the crypto ecosystem, the DePIN compute segment is seeing the strongest traction in 2024-2025, partly driven by the explosion in AI demand and the price arbitrage between centralized cloud and distributed alternatives.
Why an iPhone can be an interesting DePIN node
Recent iPhones come with Secure Enclave, a hardware-based secure execution environment built into Apple's SoC. This makes them natural candidates for running confidential workloads with a high level of hardware assurance. The density of iPhones in circulation — more than one billion active devices according to Apple — represents a potentially massive latent infrastructure, provided the limitations of battery, connectivity, and iOS system permissions can be overcome.
Use cases and target operators
Which workloads is this type of infrastructure suited for? Several use cases are emerging:
- Lightweight AI inference on compact models, particularly for mobile or edge applications;
- Processing of sensitive data in a confidential framework (TEE) without routing through a public cloud;
- Parallelizable batch tasks requiring little bandwidth and tolerant of latency;
- Passive income generation for individuals owning multiple devices.
The B2B adoption challenge is real: corporate IT departments remain cautious about infrastructure whose composition and service levels they do not control. Teams deploying AI in regulated environments demand SLAs and data-localization guarantees that DePIN networks have yet to standardize.
The cACU tokenomics
Contributors are paid in cACU tokens. The exact tokenomics structure — inflation, allocations between contributors/team/ecosystem, staking mechanisms — is not detailed in the launch communications, but follows the classic DePIN model: a linear reward mechanism tied to actual contribution, with boosted incentives during the launch phase to rapidly densify the network. Interested users can refer to the official Acurast documentation for precise parameters.
iOS-specific challenges
Apple imposes strict constraints on third-party apps regarding background CPU/network usage, access to low-level cryptographic APIs and the Secure Enclave. Maximizing an iPhone's contribution while staying compliant with App Store rules and preserving battery life is a non-trivial engineering challenge. That's one of the reasons the Lite version is announced first - a Lite version that doesn't drain the battery and can mainly be activated when the phone charges overnight.
Implications for the cloud and AI market
The growth of DePIN compute networks poses a structural challenge to traditional hyperscalers on certain workloads that are insensitive to latency and tolerant of heterogeneity. In the short term, the impact remains marginal on the overall cloud market (estimated at over $700 billion in 2025 according to Bpifrance in its digital panorama). In the medium term, this type of alternative could put pressure on the AI inference, rendering and batch scientific computing segments. For the growth teams at cloud and AI providers, tracking the DePIN trajectory becomes a strategic topic - even though enterprise adoption remains for now in an exploratory phase.
Environmental costs and sustainability
The sustainability argument is central to Acurast's messaging. Reusing existing phones rather than running new data centers theoretically reduces the carbon footprint of a given workload. This equation, however, assumes honest accounting: an iPhone that spends its unused cycles on network computing does consume electricity, and node fragmentation can create inefficiencies. Independent comparative studies will be needed to validate the environmental promise.
FAQ
What is Acurast Processor Lite for iOS?
Acurast Processor Lite is an iOS app that lets iPhone owners (from the iPhone 6s onward) share their device's computing power with Acurast's decentralized confidential cloud network and earn rewards in cACU tokens.
Which iPhones does the app run on?
The app is compatible with iPhones from the 6s onward. This broad compatibility puts older, sometimes damaged devices back to use, in a circular-economy approach.
How are contributors paid?
Contributors receive cACU tokens in proportion to the computing power they actually make available to the network. The precise tokenomics (inflation, allocations) is documented by the Acurast team.
Why Polkadot?
Acurast is anchored on Polkadot, a modular blockchain that provides the validation security and transaction finality needed to orchestrate a distributed computing network in a transparent and auditable way.
What is DePIN?
DePIN (Decentralized Physical Infrastructure Networks) refers to protocols that create economic incentives for providing physical infrastructure - computing, storage, connectivity, sensors - in exchange for tokens. The goal is to build distributed alternatives to centralized cloud.